#include<iostream>
#include<vector>

using std::cout;
using std::endl;
using std::vector;

int main()
{
	vector<int> ivec{1,2,3,4,5,6,7,8,9};

	for(auto i : ivec)
	{
		cout << ((i & 0x1)?i*2:i) << " ";
	}
	cout << endl;

	return 0;
}
